Ball for exercise



FIG. 1 is an isometric front view of a ball for exercise of the present invention;

FIG. 2 is a front view of the ball for exercise of FIG. 1, the back being a mirror image thereof;

FIG. 3 is a side view of the ball for exercise of FIG. 1, the opposite side being a mirror image thereof; and,

FIG. 4 is a top view of the ball for exercise of FIG. 1, the bottom view being a mirror image thereof. 

CLAIM The ornamental design for a ball for exercise, as shown and described. 